Universal mounting



l@ the respective t Patented July 15, 1930 Unirse sra TES PATENT; OFFICEi REX c. wrLLrs,v or snATTLn, WAsHrnGTom AssIGNon To WILLIS-JonasMACHINERY co.,11\ic., or SEATTLE, wasnine'ronJ A CORPORATION orWASHINGTON UNIVERSAL MOUNTING l 1 Application led It/Iai'cli 11, 1929.-Seria1 No. 346,231.

Thisv invention is directed to an improve-k ment in universal inountings`for valve-sea cutters and reseaters of tl etype described and claimedin PatentpNo.

5 May 1,1928.

In the type of mounting disclosed in the patent referred to, thecutter-arbor guide was terminally formed withv a ball seatingin acorrespondingly shaped receiver provided in faces of arms arranged forclamping to hold the ball and therefore the guide in any set position.The wall of the receiver was of properaneignen-slipping .cooperationwith the ball.- This particular construction has proven to have some`commercial disadvantages in that the babbitt bearing in the continueduse of the `tool is gradually worn away and at the Sametime becomesmore'` or less deformed under the pressure with a resultant unevenpressure on tlieball and a tendency to deflect under suchunevenpressure.

tool necessitates a very close, free,v sliding lit between the cuttingarbor Vand arbor guide and inthe continued use ofthe tool, particu-ylarly under the liability of imperfect lubrication, the bore 4of thearbor guide :becomes worn to an extentgto niateria'llyinterfere with thedesired accuracyof the tool. Under these circumstances,the arbor guidemust of course be renewed and this reqiu'i'esaV new ball terminal, assuch ball'rterminal is integral with the guide, and the new'ballterminal necessi- -7 tates a new babbitt metal bearing in the arm andthe relnishing of the arm as the heat of the metal destroys the finish.Thus, 'even'the normal wear in the arborguide results in thenecessity'for a renewing of a number of parts whichsliouldnotordinarilyrequire renewal and hasl provenV a matter of more or lessserious economic consideration from a commercial standpoint.

vention to so construct the sevevra'lparts "as to insure their effectiveVservice and yet render 1,667,918, issued' babbitt or like metal toinsure small Vvmatter of the former gripping element and securingvmeans, theseparability of the gripping element 'from the arborFurthermore, the required accuracy of the It isthe primary object of thepresent ini-l member,

diate renewal by a stoclrvr part and thereby `avoid the-necessity forreplacement of parts not necessarily affected by Wear and avoiding thenecessity for returning the parts to be renewed tothe factory or otherpoint having facilities forthe renewal'heretofore necessary. r f l Inthis particular, the invention comprises a gripping element havinganlexternal spherical form and an internal diametric opening toreceivethe tool arbor guide, the element thus provided having its Walldivided ona diametric line to form separable sections,

with means which these sections may be removably intertted with thetubular arbor` guide ina rigid, non-yielding, noitcompres# sible manner.Thus, the renewal of the nori'nallyfwearing' part, the` arbor guide, isa' replacing that guide, using guide facilitating this replacement. v Y

The invention also'c'ontemplates the pro-A vision of a base lto beremovably fixed on the engine block, With means carried by the basewhereby the arbor-guide and its cooperating elements may be readily andconveniently ad justed for the initial centering of the arbor guideWithrespe'ct to thevalve seat being operated upon. "U Theinvention isillustrated in the accom- Lpanying drawings,` inwhich:

Figure l is a perspective View of the mount,-

Figure 2 is an enlargedsectional view of the clamping members, grippingmember, and guide Vin cooperative relation. v

F iguref is an enlarged sectional y View through'the parts providing forthe rotative movement of the mounting as a whole.V` igure 4 lis alperspective View of the gripping member.V i

The improved mounting comprisesa base adapted to" be removably iiXedonthe engine block, a supporting member mounted for rotative adjustment onthe base, a clamping means adjustableto''andV from the supporting andagripping member 'and cutterles Y arbor guide cooperating with theclamping means.

In the preferred' embodiment illustrated, the mounting comprises a base1, Jformed with a slot 2 to receive one of the usual removable headclamping bolts of the engine. By this means, after removing the enginehead, the base may be secured in a convenient position on the block witha rotative adjustment in such position limited only'by the extent of theslot 2.

To secure the supporting member in proper relation to the base Whileinsuring the absolute accuracy-ot its relation to the base, saidsupport-ing member comprises a divided body 3 having a at face l bearingsquarely on the flat face 5 ot an upstanding part 6 ot the base. Thesupporting member is formed with an offset sleeve portion 7 integralwith the respective upper andlower portions 8 and 9 of the divided body3, to provide for contracting move-ment ot the wall of sleeve 7 when thebody parts 8 and 9 are forced together.

The lower body part -9 is formed with a circular guide lug 10 extendingbelow its face l and seating with a sliding lit, when the parts areassembled, in a correspondingly shaped recess 11 in the upstanding part-6 ot the base. A rod 12 passes through both parts ot the body andthrough the lug 10, being threaded into a threaded hole 13 in the bottomoit the recess 11. f The upper end of rod 12 has its threaded upper endprojected above the body 3 to receive a clamping handle which, whenappropriately turned, will secure the supporting member rigidly on thebase and at the same time contract the sleeve 7, or loosen such parts inan obvious manner. n

The clamping parts for the cutter-arbor guide. include a rod la fittingthe sleeve7 and obviously adjustable therein both rotatively andlongitudinally, and clamping arms 15 and 16 carried by or integral withAthe rod. T he arms 15 and 16 are of semicircular form in plan and havea substantial verticaldimension. The terminals ot the arms khavecooperating outstanding radial ears 17, one of which is-tormed with athreaded opening to receive the threaded end of a.r handle 18, whichpasses loosely through the other ear and is provided with a collar 19to.bear against such ear. By operation of the handle, the ears andtherefore the arms 15y and 16 inay be moved toward each other forclan'iping cooperation, or from each other for unclamping. 'Y Q p i Avgripping member-20 is provided to cooperate with the clamping arms.This member comprises ametallic body externally of spherical form andhaving an axial bore 21.

f T he body is .divided units diametric line,

providing two spherical segments 22. Av

cutting arbor guide 23 in the form of an elongated sleevelike member anddesigned to slidably and rotatably receive the arbor on which thecut-ter is mounted (not shown), has an external diameter throughout itslower portion for a sliding fit in the bore 21 of the gripping member20.

The lower end of the guide has an annular offset 2e to receive the loweredges of the spherical segments 22, such spherical segments throughoutthe area cooperating with the oilset 24 being flattened, as at 25, toaccurately and snugly bear on said osets. The arbor guide above thegripping member receiving portion is exteriorly threaded, as at 26, toreceive a. clamping nut 27, the lower surface of which presents thesquare abutment 2S to bear upon a flattened portion 29 at the upperextremity of the spherical segment sections 22.

Thus, with the sections in applied position on the arbor guide and thenut 27 tightenedll it is apparent that the sections are secured in asubstantiallyy rigid manner to the arbor guide and form in-eliect a.spherical or balllike enlargement at the lower end of the guide. v

1t is important that under the clamping pressure of the arms 15 and 16on the gripping member, as will later appear, no appreciable clampingpressure of such gripping sections be had on the arbor guide. To insurethis it may be found necessary to provide ordinary shims between themeeting edges of the segment sections 22 to insure absolut-e accuracy oithe internal bores of such sections with the external diameter of theAarbor guide to prevent any possibility ot clamping action of thesections 22 on the guide. The sole connecting relation between t-hespherical segment sections 22 and the arbor guide is through theclamping of such sections on theguide between the oiiset 2l on the guideand the nut 27, it being understood that the bearing surfaces betweenthe segment sections 22 andthe offsets 24 and between-such sect-ions andthe nut 27 are carefully 'formed to insure uniformity of contactthroughout to Athereby hold the sections 22 in rigid relation Yto .thearbor guide under the clamping action of the nut 27.

The inner surface of the clamping arms 15 and 16 are recessed onsphericall lines at 3() to accurately receive the gripping memberfandexert binding pressure thereon under clamping action or the arms torigidly hold the gripping member and arbor guide.

In operation, the arbor guide is to be aligned with the valve guide ofthe particular valve seat, as described in the patentabove referred to.The -basel is adjusted on .the block and secured; the supporting`member-is adjusted-and secured; andl the-arborguide is aligned=with'the valve guideef the valveY seat to b e recut or reseated. Afterplacement of leu `the parts in unit the arbor guide, the clamping armsare to be tightened by handle 18 to hold the gripping member in its thenposition and also to bind said member and the-guide.

It will be apparent from the above construction that in the naturalwearto which the tool is subjected and the necessityl following' suchnatural wear for the' renewal of the arbor guide, the replacement of'such guide is a simple and easy matter. The removal of the clamping nutinstantly frees the sections 22 of the gripping member and these may bereadily replaced andy clamped ontoa new arbor guideavailable ordinarilyfrom stock, by the simple expedient of positioning the sections 22 andapplying the clamping nut 27.

Of course, in the new application, the use of appropriate shims toprevent clamping action of the segments on the arbor guide is of 1importance and as it may well be that the exterior diameter of thereplaced guide differs slightly from that of the worn guide, care shouldbe taken to use the proper shims to insure the accuracy of .fitrequired; This, of course, is a detail of assembly well understood byany mechanic and the provision of several shims of different thicknessesas a part of the original tool equipment may readily take care of theserenewals. Therefore, in the absence of breakage, the renewal of the partmost subjected to wear is a simple mechanical operation andronerequiring' but a few moments time, so that the'tool is practically notout of service at all by the requirement of replacement of the wornpart.

The spherical form .gripping member is constructed in two parts which,in addition to other advantages, permits theassemblage oi form withinthe clamping parts, as it is apparent that if the gripping member was inthe form of a single unit, it could not be placed in and removed-fromposition iii the clamping parts. lhere theV gripping member is dividedinto two parts as shown, the sawing element which divides the materialwill, or' course, take out a certain portion of that material inthecutting operation, that is at least to the thickness ot the saw. Shimsofappropriate thickness, used between the parts, will replace the metalcut out by the saw and thus the gripping member will, in use, be in truespherical form.

What is claimed to be new is: l. A universal mounting for valvereseaters and the like, includinga tool-arbor guide, a spherical membermade up in sections andy surrounding the guide, and means including anoffset and a nut on the guide for vsimultaneously clamping the sectionsof thespherical member onto the guide. e

2. A universal mounting for valve rescaters and Vthe like, including' acutter-arbor guide, a gripping member loosely encircling f the guide andmade up of a plurality of sec-` guide and comprising member with respectto the guide.'v

ping member and adapted in clamping co-l operation to bind the sectionsof the gripping member to hold the guide.

3. A universalmounting for valve rescaters and' the like, including acutter-arbor guide, a gripping member .loosely Yencircling v the guideand made upjof a plurality .of sec-V tions together presenting anexterior spherical face, meansfcarried by thegcutter arborguide forsimultaneouslyclamping ytliesections onto the guide, clamping armsformed to fit the spherical face of the gripping member and adapted inclamping cooperation to bind the sections of the gripping memberto holdlthe guide, saidsectionsbeing free o1a clamping'action on the guide atall times. Y l. A-universal mounting for valve reseaters Vand the like,including a cutter-arbor guide, a gripping lmember encircling :the

ya plurality of independent sectionsftogether presenting anexteriorspherical surface, clamping arms recessed on their innersurfaces to'accurately receive the sphericalsurfacel ofthe gripping`member, means to operate theclamping arms lmeans tooperate the clampingarmsto. exert a-clamping pressure onthesections ofthe gripping member tothereby bind the guide in any position inwhich it may beset, an offseton the -guideto receive thelower ends of the gripping sections, andaclamping nut cooperating withthe guide to engage'the upper ends of thelsections and'clamp the sections be-l tween said nut and offset toy fixthe gripping V6.9i universal mountingfor. valve reseat-f ing toolsandthe like.ineluding abase to be removably secured to theengine block, asupporting member rotatablyaadjustable on the base means cooperating ingmember and the baseto secure the supporting member in *adjustedposition,xa rodv slidable in the supporting member, clamping armscarriedby the rod, al cutter-arbor-guide arranged between `the-'clampingarms, and a sphericalgripping member interposed bel with the support!`lOO tween the guideand arms and serving to Iix the guide 'in any desiredposition 'following clamping movement or' `the arms.

7. A universalmounting Jfor valve yreseating tools, including acutter-arbor guide, a sectional gripping member loosely encircling the Yguide, clamping arms for exerting a clamping` pressure on the sectionsof the gripping member, a rod projecting from said arms, a supporting`member in which the rod is longitudinally and rotatably adjustable, a base on which the supporting member is rotatable, and means forsimultaneously clamping the supporting member in fixed relation to thebase and securing said rod against movement. Y

8. A universal mounting for valve 'reseating tools, including acutter-arbor guide, a sectional Lgripping -member loosely encircling theguide, clamping arms for exerting clamping pressure on the sections ofthe gripping member, a rod projecting from said arms, a base to beremovably secured to the engine block, said ibase having a plain upperbea-ring face with a central depression, a supporting member'having abearing face to cooperate with the 'bearing face of the base 'and havinga lug to seat in the depression of the base, said supporting memberbeing` 'formed in upper and lower parts together with an offset sleeveto -receive said rod, a pin .passing loosely through the partsof thesupporting member and the lug thereon and threaded into the bottom ofthe recess in the base, and a handle having a threaded cooperation withthe pin beyond the upper part of the supporting member, whereby throughoperation of the handle the supporting member is fixed with relation tothe base `and the sleeve 1s clamped on said rod to prevent movement ofthe latter. v

9. A universal mounting for valve reseat` ing tools, including a cutterarbor guide, a spherical gripping member on vthe guide clamping arms forexerting a clamping pressureon the gripping member, a rod projectingJfromv said arms, a supporting member in which the rod is longitudinallyandrotatably adjustable, a baseon which the supporting member isrotatable, and means for simultaneously clamping the supporting` memberin fixed relation to the base and securing said rod .against movement.

10. A universal mounting for valve reseating tools, including a cutterarbor guilde, a spherical gripping -member on the guide, clamping arms`for exerting-a clamping'pressure -on theV gripping member,.a rodprojecting from said arms,.a.base-to be removably secured tothe Vengineblock, said base having a-plain upperbearing-acewith a 'centraldepression, asupporting member having a bearing face to cooperate withthe ibearing face of the base vand having a'lug to seat-in thedepression of the'basesaid supportingmember being formed in upper andlower parts together with an offset sleeve to receive said rod, a pinpassing loosely through the parts of the supporting member and the'lugthereon and seated in the bottom of the recess in the base, and a handoperated element having` athreaded cooperation with the pin beyond theupper part of the supporting member, whereby through operation of thehand operated element the supporting member is iXed with relation to thebase and the sleeve is clampedv on said rod to prevent movement of thelatter.

In testimony whereof I aliix my signature.

REX C. WILLIS. [n s]

